Exhibit 99.1 Vir Biotechnology Provides Corporate Update and Reports Fourth Quarter and Full Year 2023 Financial Results – Prior data from the Phase 2 SOLSTICE trial in chronic hepatitis delta participants demonstrated that after only 12 weeks of combination therapy, 100% (6/6) of participants had HDV RNA less than the lower limit of quantification – – Phase 2 SOLSTICE trial on track to complete enrollment ahead of schedule with initial data expected in the second quarter; greater than 90% of participants d ...